Mechanism of Pb absorption in wheat grains | |
Ma, Chuang2; Liu, Fuyong1,2; Xie, Pan2; Zhang, Ke2; Yang, Junxing3; Zhao, Jihong2; Zhang, Hongzhong2 | |
刊名 | JOURNAL OF HAZARDOUS MATERIALS |
2021-08-05 | |
卷号 | 415页码:12 |
关键词 | Wheat Grains Pb Absorption regularity Organs contribution |
ISSN号 | 0304-3894 |
DOI | 10.1016/j.jhazmat.2021.125618 |
通讯作者 | Ma, Chuang(machuang819@163.com) |
英文摘要 | Atmospheric deposition is the primary source of external environmental media for lead (Pb) influx in wheat grains. However, the mechanisms of Pb grain absorption remains unclear. We explored this mechanism through comparative experiments, involving defoliating leaf blades (TG) and a control group (CK) of field wheat after the anthesis stage. Scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy analysis displayed that leaves and ears can directly absorb atmospheric deposition Pb through stomata. Compared with CK, the yield, grain Pb content, and grain Pb accumulation of TG wheat were significantly decreased by 13.25%, 22.10%, and 32.58%, respectively. Combined with the Pb isotope analysis, the ear had the highest contribution to grain Pb followed by leaf and root. Simultaneously, the absorption rate of grain Pb demonstrated a dynamic trend of "N" shape. Dominant contribution periods of the root, leaf, and ear organs to grain Pb accumulation were different. Unlike the root system, the contribution of the aboveground to grain Pb increased gradually, and the contribution of leaf and ear to grain Pb were mainly concentrated in the early and late filling stage, respectively. Our findings can provide a theoretical basis for the control of Pb pollution in grains. |
资助项目 | Henan Province Key R&D and Promotion Projects[212102310063] ; National Natural Science Foundation of China[41501527] |
WOS关键词 | TRITICUM-AESTIVUM L. ; HEAVY-METAL ; EAR PHOTOSYNTHESIS ; FLAG LEAF ; WINTER-WHEAT ; DURUM-WHEAT ; VEGETABLES ; FOLIAR ; PLANTS ; YIELD |
WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000657737000001 |
资助机构 | Henan Province Key R&D and Promotion Projects ; National Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://ir.igsnrr.ac.cn/handle/311030/164084] |
专题 | 中国科学院地理科学与资源研究所 |
通讯作者 | Ma, Chuang |
作者单位 | 1.Univ Camerino, Dept Chem, I-62032 Camerino, MC, Italy 2.Zhengzhou Univ Light Ind, Henan Collaborat Innovat Ctr Environm Pollut Cont, Zhengzhou 45000, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resource Res, Beijing 100101, Peoples R China |
推荐引用方式 GB/T 7714 | Ma, Chuang,Liu, Fuyong,Xie, Pan,et al. Mechanism of Pb absorption in wheat grains[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,415:12. |
APA | Ma, Chuang.,Liu, Fuyong.,Xie, Pan.,Zhang, Ke.,Yang, Junxing.,...&Zhang, Hongzhong.(2021).Mechanism of Pb absorption in wheat grains.JOURNAL OF HAZARDOUS MATERIALS,415,12. |
MLA | Ma, Chuang,et al."Mechanism of Pb absorption in wheat grains".JOURNAL OF HAZARDOUS MATERIALS 415(2021):12. |
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